Do you know the most important thing you need to do in order to build muscle with only your bodyweight?

If you can do this with even the most basic of exercises, then you can get great muscle-building results with pure bodyweight training. You can still build tons of muscle even training at home with no weights, while on vacation, or if you decide to simply take a bunch of time off from the gym.

Can you guess what it is? (Click on your answer to see if you're correct).